EXFO FTB-8100 Series, User Manual

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Port Tabs
118
FTB-8100 Series Transport Blazer
Port TX (Electrical Interfaces)
Frequency
Note: Frequency offset generation is not available for 10Base-T test.
³
Frequency Offset (ppm)
: Allows entering a positive or a negative
frequency offset in ppm. Choices are listed in the table below. The
default setting is
0
. The frequency offset value can be changed on the
fly even when activated (On).
³
Actual Frequency (bps)
: Indicates the frequency (actual fre
Frequency offset) that will be used for transmission.
³
Nominal Frequency (bps)
: Indicates the nominal frequency of the
signal. The nominal frequencies are listed in the table below.
³
On/Off
button: Allows enabling the frequency offset generation. This
setting is disabled (Off) by default.
Interface Frequency Offset
a
a. The frequency offset range is guaranteed for a source signal at 0 ppm. In the event
that the source signal already has an offset then, the output signal may exhibit an
offset larger than the range specified.
Nominal Frequency
DS1 ±140 ppm 1544000 bps
E1 ± 70 ppm 2048000 bps
E2 ± 50 ppm 8448000 bps
E3 ± 50 ppm 34368000 bps
DS3 ± 50 ppm 44736000 bps
STS-1e/STM-0e ± 50 ppm 51840000 bps
E4 ± 50 ppm 139264000 bps
STS-3e/STM-1e ± 50 ppm 155520000 bps